Nathan, we have the same issue but have always (even pre online registration) set a priority to who can schedule when which stops all studnets (6,000+) all hitting at once. Our blocks are about 300 every hour. Still we see a slowdown but its usually not horrible
________________________________________
From: web400-bounces@xxxxxxxxxxxx [web400-bounces@xxxxxxxxxxxx] On Behalf Of Nathan Andelin [nandelin@xxxxxxxxx]
Sent: Tuesday, June 23, 2009 3:11 PM
To: Web Enabling the AS400 / iSeries
Subject: [WEB400] Overwhelming a Web Application Server
At the stroke of midnight, one of our state universities opens their course registration system to the Internet, and within a matter of minutes the entire system slows to a snail's pace as eager students flood servers with course registration queries & requests for fall classes.
The problem with an overwhelmed system is that nobody gets anything done under the burden of resource contention. Is anyone dealing with problems like this? What stragegies work? Restricting Apache ThreadsPerChild? Reducing the KeepAliveTimeout? Configuring session limits?
Nathan.
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